Significant Impact Being Mitigated |
Mitigation Measure |
Responsibility for Implementation |
Enforcement Responsibility |
Monitoring Responsibility/ Frequency |
Actions Indicating Compliance |
Surface Water Hydrology and Water Quality (cont.) |
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Increase in the |
4.H-4a: Prior to issuance of a building permit, all site- |
Applicants for site-specific |
City of Brisbane City |
The City Community |
Installation of drainage |
amount of runoff and |
specific development plans within the Project Site shall |
development |
Engineer |
Development Director shall |
improvements to the |
potential flooding. |
include systemwide drainage improvements that shall |
prepare conditions of |
satisfaction of the City |
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DSP, DSP-V, CPP, & CPP-V scenarios |
accommodate all increased runoff in accordance with City requirements and correct known existing deficiencies (e.g., Levinson Overflow Area and the |
approval for all site specific development to require installation of such |
Engineer. |
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PG&E property). On-site storm drainage collection |
systemwide drainage |
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facilities shall be sized to convey the peak flow rate |
improvements as are |
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from a 25-year storm event entirely within the piping |
needed to accommodate |
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system such that Baylands roadways and recreational |
increased runoff, achieve |
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facilities are not flooded. Drainage improvements shall |
the performance standards |
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accommodate the 100-year peak storm event within |
of Mitigation Measure 4.H- |
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the piping system and within streets such that building |
4a, and correct known |
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finished floor elevations provide a minimum of 1-foot of |
existing deficiencies to the |
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freeboard above the 100-year storm event hydraulic |
satisfaction of the City |
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grade line water elevation with tidal flow and 100 years |
Engineer in compliance. |
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of estimated sea level rise. Key roadways including |
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Sierra Point Parkway, Lagoon Road, and Tunnel |
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Avenue shall be designed such that these roadways |
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are available as evacuation routes in the event of a |
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100-year storm event. The proposed system design |
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shall be submitted to the City Engineer for approval |
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and shall hydraulically isolate existing drainage inlets |
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fronting Levinson Overflow Area and the PG&E |
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property from existing Brick Arch Sewer system. |
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Increase in the |
4.H-4b: Prior to issuance of a building permit, all site- |
Applicants for site-specific |
City of Brisbane City |
The City Community |
Installation of new storm |
amount of runoff and |
specific development plans within the Project Site shall |
development |
Engineer |
Development Director shall |
drain facilities along |
potential flooding. |
include additional conveyance capacity by |
prepare conditions of |
Bayshore Boulevard north |
||
DSP, DSP-V, CPP, & CPP-V scenarios |
incorporating new storm drain facilities along Bayshore Boulevard north of Industrial Avenue. Development plans shall also require addition of a new inlet near the |
approval for site-specific development to require installation of new storm |
of Industrial Way, including a new inlet near the Bayshore Boulevard and |
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Bayshore Boulevard and Industrial Way intersection |
drain facilities along |
Industrial Way intersection |
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that is large enough to intercept surface flows from |
Bayshore Boulevard north |
to intercept surface flows |
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Levinson Overflow Area and the PG&E property in |
of Industrial Way, including |
from Levinson Overflow |
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accordance with and as approved by the City. Review |
a new inlet near the |
Area and the PG&E |
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and approval by the City engineer shall be required to |
Bayshore Boulevard and |
property and provide |
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confirm that conveyance capacity is sufficient to |
Industrial Way intersection |
adequate conveyance |
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accommodate the 100-year peak storm event within |
that is large enough to |
capacity to the satisfaction |
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the piping system and streets such that building |
intercept surface flows |
of the City Engineer. |
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finished floor elevations provide a minimum of 1-foot of |
from Levinson Overflow |
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freeboard above the 100-year storm event hydraulic |
Area and the PG&E |
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grade line water elevation with tidal flow and 100 years |
property to achieve the |
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of estimated sea level rise. |
performance standards of |
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